At least 3 times a week.
7 hours a week, for champions
I think that people should get at least 2 to 3 hours of exercise every day :)
Nothing
The best aerobic equipment is a pair of running shoes, you can use them anywhere, they don't take up much space and they use no electricity.
Aerobic gymnastics (aka Sport Aerobics) looks somewhat similar to a floor exercise, but "is the ability to perform continuously complex and high-intensity movement patterns to music...with a high degree of perfectly executed elements of difficulty." It can be performed solo or with more than one athlete. Some movements that would be used in other gymnastics are banned - like handsprings and acrobatic flips. See Related Links.
In reality you really should breathe using both your nose and mouth. Swimming is an aerobic exercise, and therefore requires your body to grab as much oxygen as you can in order to perform well.
There is no standard limit to the amount of exercise someone should get each week. Listen to your body to determine if you are getting enough or too much exercise.
he/she should get 30 min. of exercise
an aerobic exercise is one that requires a lot of oxygen to the muscles. in order to do this your heart rate and breathing will quicken. skipping and running are aerobic as they can significantly raise your heart rate.
How much weight are we talking about? It's not safe or practical to lose more than a few pounds a week - or a month for that matter.
Swimming, cycling, and pretty much anything that keeps your heart rate up for an extended period of time.
there is no specific age for do exercise but it should be start from the age of 10th but not hard exercise which stop your growth, don't use weight lifting at this age weight lifting should be start after the age of 24th you can increase it slowly slowly..